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Selection Rules for Transport Excitation Spectroscopy of Few-Electron Quantum Dots

Daniela Pfannkuche·Sergio E. Ulloa
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Abstract

Tunneling of electrons traversing a few-electron quantum dot is strongly influenced by the Coulomb interaction leading to Coulomb blockade effects and single-electron tunneling. We present calculations which demonstrate that correlations between the electrons cause a strong suppression of most of the energetically allowed tunneling processes involving excited dot states. The excitation of center-of-mass modes, in contrast, is unaffected by the Coulomb interaction. Therefore, channels connected to these modes dominate the excitation spectra in transport measurements.

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Daniela Pfannkuche, Sergio E. Ulloa. 1995-10-17. Selection Rules for Transport Excitation Spectroscopy of Few-Electron Quantum Dots. https://doi.org/10.1103/physrevlett.74.1194

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